Selective coupling



L. H. BULLAHD. SELECTIVE COUPLING.

APPLICATION FILED 'JULY12, |921. Il, L 4 l 2 SHEETS-SHEET l.

L. H. BULLARD. SELECTIVE COUPUNG. APPLICATION min Jun/ 12. 1921.

Patented July H, 1922..

2 SHEETS-sniff 2.

irse srA'ras LESTER H. BULLARCD", OF SAN'LEANDRO, CALIFORNIA.

SELECTIVE coUPLI'Ne.

Application ined July i2,

T all 'whom it may concern: i

Be it known that l. LESTER BULLARD, a citizen of the United States ofAmerica, and a resident of San Leandro, county of Alameda, and State ofCalifornia, have invented a new and useful Selective Coupling,

. of which the following is a specification.

My invention relates to couplings for connecting a driving element to adriven element.

An object of the invention is to yprovide a selective coupling which maybe interposed between a driven element and a plurality of drivingelements so that the driven element may be actuated by any one of thedriving elements. l Another object of the invention is to provide aselective coupling of the character described characterized bysimplicity and perfect safety to the operator.v i

` My invention possesses other objects and features of advantage, someof which, with the foregoing,`will be set forth in the followingdescription of my invention.` It is to be understood that I do not limitmyself to theshowing made by the said description, as I may adopt`variant forms of `my invention within thescope of the claims.

In thedrawings, Fig. 1 is a front elevation of the deviceof my inventionas parvincida-ily adapted for use with a windmill `operating a pump, andwhere a small auxiliary motor or engine is also provided to drive thepump and where it is sometimes desirable to operate the pump-by hand.Fig. 2 is a vertical sectional view taken on vthe line 2 2 of Fig. 1.Fig. 3 is an elevation vlargely -in diagram showing the completeinstall-ation.- Fig.` 4: is a horizontal sectional view4 taken on theline lr-4 of Fig. 2.

In the present application Ishall describe my invention as applied tothe windmill. inst-allation above referred to, `but it is obvious thatit may alsobe applied to other mechanisms where similar results are tobe obtained.

In general terms the coupling -of my invention comprises a head securedto the driven element and in which the drivingelements are sl-idablyarranged. For each one of the driving4 elements there is a latc'hlarranged on the head and means are provided for -rnovingthese latchesso that any desired driving element may be locked to the head by theassociated latch, all other latches at the same time being4 in neutralor y Specification of Letters Patent. Pgutgnted gully 11, 1922 1921.Serial N0. 484,081.

disengaged position. The operation of the latches is controlled by apivoted plate formed with a handle thereon. Movement ofthe plate to anindicated position automatically effects the desired movement of thelatches. i

, More particularly my selective coupling comprises a head Qrformed onthe rear with ribs or flanges 3 between which lie the three channels lin which three driving elements are slidably enclosed by the cover plate6. In the present instance the three driving elements consist `of thewheel shaft T which, as shown in 3, is connected in the usual way withthe'wind wheel 8; the motor shaft E9 actuated in any suitable way by thegas engine or motor 11, such for instance as by the walking beam 12actuated bythe pullev 13 driven by belt 14 on a pulley 16 on the engineor motor shaft; and the shaft 17 connected by the the link 18 with themanually operated handle`19. The head 2' iskrigidlv fixed to the pumpshaft 21, thc upper end of which is preferably socketed in the lowerportion of the middle channel 4:.

Formed onthe front of the head vare lugs `.252 in which is mounted the.shaft 23. There is a lug` opposite each of the anges 3, and betweeneach pair of lugs, and` therefore oppositeveach channel 4L. a latchvlever- 24- journalled on the' shaft. `There is therefore a latch leverassociated with each of the driving elements 7. 9, and 17 and theselatch levers are attached to the head and move with it. y

y The lower lend of each latch lever is formed. with a lug 26 adapted tobe engaged with a correspondingly formed recess in the associateddriving element` as shown in Fig. 2. The upper end ofthe latch lever isbent outwardly so that each latch lever may be turnedcn its shaft .toengage the lower end in the associated driving element or to lie in theneutral position in which the lower end is disengaged.. Each end of eachlever is provided with a stud 27. The studis loosely mounted in a thinweb 28formedA in the lever and is prevented from disengagement by acotter pin 29 on one side and a spring 31 on the other side which, beinginterposed between the web and the head` of the stud, tends to keep thestud in erect position upon the lever. Each stud is thereforeresilientlyconnected to the lever and is universally movable thereon.The outer end of each stud projects loosely through'the top .y

said plate for engaging a selected latch with its associated shaitv anddisengaging any other engaged latch.

8. The combination with driving and driven shafts of a'selective4coupling coinprising a head secured to .one of said shaft-s andslidably engaged on the other shafts, a plurality of latch leverspivotally mounted on said head, each latch lover being engageable withone of said other shafts, a pivotally mounted plate, and cams on saidplate `lor engaging a selected latch lever with its associated shaft.

9. The combination with driving and driven shafts of a selectivecoupling comprising a head secured to one of said shafts and slidablyengaged on the other shafts, a plurality of'latch levers pivotallymounted on saidhead, each latch lever being engageable with one of saidother shafts, and lmeans for engaging a selected latch lever with itsassociated shaft.

lO. The combination with driving and driven shafts of a selectivecoupling comprising a head secured to one of said shafts and slidablyengaged on the other shafts, a plurality of latch levers pivotallymounted on said head, each latch lever being engageable with one of saidother shafts, a resiliently mounted stud at each end of each latchlever, and cam means engageable with said studs for engaging a selectedlatch lever With its associated. shaft.

ll. The combination with driving and driven shafts of a selectivecoupling cornprising a head secured to one of said shafts and slidablyengaged on the other shafts, aplurality of latch levers pivotallymounted on said head, each latch lever being en- 'gageable with one ofsaid other shafts, a

resiliently mounted stud at each end of each latch lever, al manuallyoperated plate pivotally mounted on said head and cams on said plateengageable with said studs tor engaging a selected latch lever with itsassociated shaft and disengaging any other engaged latchl lever.

In testimony whereof, I have hereunto set my h and.

LESTER H. BULLARD.

